• Mr. Shastri Vishwambhar Naresh
• Mr. Jawale Pankaj V.

Fins are the extended surfaces which are used to dissipate heat from hot surfaces through natural convection without any external device. Geometry and orientation of fins play a significant role in natural convection heat transfer. Fin arrays of different shapes on longitudinal and vertical surfaces are used in many of the electronic and mechanical applications to transfer heat to the surrounding so as to keep the place at the required temperature. For semi-elliptical notch fin array a chimney flow pattern is developed due to density difference. This flow pattern forms a stagnant zone near the central bottom location. That portion does not contribute much towards heat transfer. Removal of such ineffective areas from fins will reduces material cost and material weight without affecting heat transfer rate. The purpose of the present study is to investigate the performance of fin array with notch and effect on heat transfer coefficient due to compensation of notch area at various locations such as at side and at height. The dimensions of fins are changed by maintaining constant spacing between the fins. The effect on heat transfer coefficient of fin array with various geometries such as fins without notch, fins with notch, fins with compensation of notch area at sides along length and compensation of notch area at height is examined experimentally and results are compared to know better geometry of fin. The notches are given in semi-elliptical shape. The notches given are 0%, 5%, 10%, 15%, 20% to different fin arrays.

Natural Convection, fin arrays, notches, area compensation.

"Heat Transfer Analysis of Semi-elliptical Notched Rectangular Fin Array with and without Area Compensation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.e681-e697, May-2023, Available :http://www.jetir.org/papers/JETIR2305496.pdf

"Heat Transfer Analysis of Semi-elliptical Notched Rectangular Fin Array with and without Area Compensation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppe681-e697, May-2023, Available at : http://www.jetir.org/papers/JETIR2305496.pdf